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In 2000, the population at Arlington Middle School was approximately 421 students. In 2010, the population was approximately 584 students. Find the percent of change in the population at Arlington Middle School from 2000–2010 and identify it as an increase or decrease.

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Answer: it is an increase

Explanation:

Percent change = (584 - 421)/421 × 100

= 38.72%

The population increased by 38.72% from year 2000 to 2010

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